Sash-lock.



E. BLOSSFELD.

`SASH LOOK.

97L35m Patented sepnz?, 1910.

2% gij/g@ Se il EMIL LOSSFELD, OF SAN FRANCISCO, CALIFORNIA.

SASH-LOCK.

Specification of Letters Patent.

Application filed November 29, 1909.

Patented Sept. 2'?, 1910.

sel-iai No. 530,293.

To all whom tt may concern:

Be it known that I, EMIL BLossFnLD, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improiif'ements in Sash-Locks, of which the following' is a specification.

My invention relates to window looks or sash locks. Its object is to provide a simple, practical locking device, which can be readily attached to any window, and by which the sashes may be locked together, either in open or closed position, and which will regulate and limit the opening at top and bottom of the window in case ventilation is desired.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure l is a front elevation of the device, attached to a window, with the sashes shown in closed position. Fig. 2 is a similar view with the sashes partly open. Fig. 3 is a top plan view corresponding to Fig. l. Fig. 4 is a top plan View corresponding to Fig. 2. Fig. is a section on .0c-m Fig. l. Fig. 6 is a. section on Q/-g/ Fig. 2; (Figs. l, 3 and 5 being read together, and Figs. 2, 4 and 6 being read together.)

A represents the upper sash, and B the lower sash of a window, to which the invention is applicable.

In the embodiment of the invention, as here illustrated, 2 is a casting or plate secured to the top rail of the lower sash, and 3 is a casting or plate secured to the bottom rail of the upper' sash.

4. is a rod of suitable length and material, with one end bent to tit and freely turn in a suitable journal 5 in the sash plate 3; the main portion of the rod 4 being straight, and at right angles to the portion pivoted in the bearing 5, and the straight portion slidable in the U-shaped gripping portion 6 of the clamp screw 7, which latter passes through a guide or bearing 8 in plate 2 and is threaded to be engaged by a locking nut 9.

The free end of the rod 4 is bent, or otherwise fashioned to form a head l0 to prevent its being withdrawn from the U clamp 6.

As here shown the rod 4 is normally free to swing in a plane parallel with the sashes.

In operation the two plates 2 3 are secured on the adjacent sash rails. If it is desired to leave the windows free so that they can be opened independently, and to their full limit, or otherwise be moved up and down freely and independently, the rod 4 is disengaged from the clamp member (3, this disengagement boing readily etl'ected by suitably slacking up or pushing in on the nut 9 so that the rod 4 can be sprung out through the open side of the U clamp (5. If it is desired though to utilize the lock, the rod is engaged with the clamp, as shown in Fig. G, and when so engaged the sashes are free to move up and down within the limits of the length of the rod 4.

If it is desired to hold the window open, either from top or bottom, and to maintain the sides of the opening temporarily fixed, it is only necessary to screw up on the nut 9, which has the effect of drawing up on the clamp 6 to grip the rod 4 against the end of the bearing-block 8. Likewise the windows are locked in closed position by iirst closing the window, and then tightening the screw 9, as shown in Fig. l.

Ihile I have shown the device attached to the upper and lower rails of two sashes, it is manifest that it can be applied in other ways. It can be applied to single sliding windows by simply attaching one plate 2 to the window frame, and the other plate 3 to the sliding sash.

It is possible that various changes and modifications may be made in the form of the device without departing from the principle of the invention.

As a means of quickly releasing the grip 6 from the rod 4 so that either window may be run up or down independently of the locking rod 4, I provide a loose collar l1, which slides free upon the screw 7 between the thumb-screw 9 and a spiral spring 12. The spring l2 acts against a fixed stop and against the collar ll to exert an inward pull upon the hook 6. By ressing in upon the thumb-screw 9, the collar 1l slides into the housing 8 and compresses the spring 12 and allows the hook 6 to be disengaged from the bar 4.

Having thus described my invention, what I claim and desire to secure by Letters Patent isl. In a sash lock, the combination with a movable sash, a plate secured to a suitable point of support, a rod pivotally connected to said plate to swing in a plane parallel with the sash, a plate secured to the upper rail of said sash, and having a slclable spring-pressed clamp member engageable With said roel.

2. In a sash lock, the combination with a movable sash, a plate secured to a suitable point of support, a rod pvotally connected to said plate to swing n a plane parallel With the sash, a plate secured to the upper rail of said sash having a Clamp member engageable with said rod, said clamp member comprising a sldably-mounted screw-threaded bolt having a U-shapecl portion open at one side and adapted to embrace the rod and a clamp screw operative on the bolt.

3. In a window look, the combination with movable sashes, of an outwardly springpressed hook member carried by one of the sashes and sldabletransversely of one of the rails thereof, a pvoted rod carried by the other sash and engageable and dsengageable with said hook member, and means for operating the hook member either to clamp the rod or to compress the spring of said hook member and thereby cause the hook member to release the rod.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

EMIL BLossFnLD.

Vtnesses:

CHARLES A. PENFIELD, CHARLES EDELMAN. 

